Drill support



March 6, 1928.

Filed Sept. 30, 1927 5 Sheets-Sheet 1 24 4% I m I ZR. I 7 gas 46 75 20 43 E; 49

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March 6, 1928.

- 1,661,956 J. NAGY DRILL SUPPORT Filed Sept. 30, 1927- 3 Sheets-Sheet 2 532.; ff 2172 3/ #1 M07: is) Z 30 /0 f 71a. 5.

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March 6, 1928. 1,661,956

.I. NAGY DRILL SUPPORT Filed Sept. 30. 1927 3 r-sheet s m Z1 Z0 INVENTOR.

670727? (A gy V ATTORNEY.

Patented Mar. 6, 1928.

units-n STATES PATE-Nr oer-ice.

JOHN NAGY, OF JESSUP, PENNSYLVANIA.

DRILL sorron'r.

Application filed September 30, 1927. Serial No. 222,955.

Another object is to provide a supporting and seating device for rock drills and the like especially suitable for usein mining opcrationsand capableof being readily s t up for use.

Still another object is to provide adevice ot the above kind including a pairof extendable props orpillars adapted to be erected in tandem relation and having lateral means near corresponding ends for supporting the ends of a drill guidingplatform, and weightoperated means for slidingthe drill on the platform so as to t'eed the drill bit to its work, the platform supporting means and the feeding means being so constructed as to permit the device to beinverted'for facilitating drilling either adjacentthe-roof or adjacent the floor of the mine as desired.

Other objects will appear as thenature of the invention is better understood, and the same consists in the novel form, combination and arrangement of parts hereinafter more fully described, showninthe accompanying drawings and claimed.

In the drawings, wherein like reference characters indicate corresponding parts throughout the several views,

Figure 1 is a sideelevat-ional View of a drill supporting and seating device con structed in accordance with the presentinve-ntion, the device being erected for use in drilling holes adj accnt the roof of a mine;

Figure 2 is a top plan view of the device shown in Figure 1;

Figure 3 is a view similar to Figure 1 with the drill supporting and feeding device inverted and in use for drilling a hole adjacent the floor of the mine;

Figure 4 is an enlarged fragmentary transverse section taken upon-line 4l l of Figure 3; H

Figure 5 is an enlarged end elevational view looking toward the right of Figure 1, with parts omitted and parts broken away;

Figure 6 is a fragmentary longitudinal section ot one oit the supporting props;

, Figure 7 1s a perspective view of one of the lateral platform supporting arms or bolts together with the clamping boltot' its asso-' ciated platform clamp; and

Figure Sis an enlarged transverse section taken on line 88 of Figure 1'.

Referring more indetail to the drawings, the present.invention comprises a pair of similar supportii'ig propslor pillars 5 inthe nature of extensible jacks adapted to .be. erected in tandem relation and in. an upright position adjacent the face 6 of the mine as shown in Figures 1. and 3, the propshaving opposite pointed ends 7 and 8 for engagement with the floor and theroot of the mine in a well known manncr'whereby the props are firmly mounted and maintained in the desired upright position.

As shown, each prop or pillar embodies a i tubular upper section 9, an intermediate section 10 whose upper end is adjustably telescoped into the upper section 9 and the lower end of which is hollow and internally threaded as at 11 (Figure 6) ,and a further end or lower section l2 having a threaded upper end portion 13 adapted to be adjustably threaded into the lower end portion of the intermediate section 10 and provided with lateral handles 14 for-facilitating manual turning thereof. I For securing theendsection 9 and interniediatc section 10 1n rclative-longltudi nally adjusted positions, the adjacent ends of these sectionsare provided withlongitudim1 series of transverse openings 15 and 16 adaptedto be selectively registered for reception of a removable pin 17 whereby the sections are held in adjusted relations for obtaining a rough adjustment of the props or pillars to approximately. the desired length. \Vhen the props or pillars are thus adjusted, corresponding pointed ends ofthe same are engaged with .the floor of the mine, whereupon the end scctions 12 are turned for threading the same outwardly of the intermediate sections 10 and causing the opposite pointed ends of the props to engage the roof of the mine. This causes the pointed ends of the props to embed themselves into the floor and roof of the mine so that the props are effectively maintained in the upright tandem relation desired.

Adjustable vertically or longitudinally o the end sections 9 of the props are split "and toward the face 6 of the mine.

clamps 18 having lateral arms 19 adapted for supporting reception of the ends of a drill-supporting platform 20. The outer or free ends of the arms 19 are provided with removable and reversible screw clamps fll adapted for engagement with the outer side of the platform 20 for firmly clamping the latter upon the supporting arms 19 as clearly illustrated in the several views. By permitting the clamps 21 to be removed and reversed, the platform 20 maybe clamped against opposite sides of the arms 19 so that the supporting props may be employed as shown in Figure 1 for supporting the drill adjacent the roof of the mine or so that the props may be reversed end for end to support the platform and drill adjacent the floor of the mine asshown. in Figure 3.

The platform 20 is formed in its upper surface with a longitudinal guideway or groove 22 adapted to slidably receive the lower part of the casing of the drill'23 for effectively guiding the latter for sliding movement longitudinally of the platform The drillfis preferably of the reciprocating'or iinpacttype having a cross handle24 at one end for facilitating manual guiding and steadying of the drill whose cutting bit is generally indicated at 25. Obviously, by vertically adjusting the clamps 18, the drill may be supported at the desired distance from the roof of the mine or from the floor of the latter.

The platform 20 is bifurcated at its forward end to provide a pair of side arms 26, and mounted upon a transverse'axis 27 between these arms is a guide pulley 28. Connected to opposite ends of the drill handle .24; arevfiexible members, orcables 29 adapted ,to be extended forwardly and over the pul- Icy 28 and havingva weight 30 connected to the depending end thereof. It will thus be seen that as the drilling proceeds, the weight 30 will lower for auton'iatieally feeding the drill-23 and its bit 25 tothework or toward the face 6. The description just given apupon a lateral arm of a split clamp 34 mounted upon the end sections 12 of the forward prop, as shown. In this way, the weight 30 is allowed suiliclent drop for complete feeding of the drill to its work even though the drill is supported at a low eleva tion as shown in Figure 3.

From the foregoing description it 155 believed that the construction and operation as well as the advantages of the present invention will be readily understood and appreciated by those skilled in the art.

Minor changes may be made without departing from the spirit andscope of the invention as claimed.

What I claim as new is:

1, In combination, a pair of extensible props having lateral supporting arms adjacent correspomling ends, a drill supporting. and guiding platforni, means to secure the platform upon either of the corresponding sides of said arms, whereby the drill may be selectively supported ad]acent the roof or adjacent the floor of a mine upon inverting the props, and weight operated means for moving the drill on the platform when the drill is supported in either position.

2.111 combination, a pair of extensible props having lateral supporting arms adjacent corresponding ends, a drill supporting and, guiding platform, means to secure'the platform upon either of the corresponding sides of said arms, whereby the drill may be selectively supported adjacent the roof or adjacentthe floor of a mine'upon inverting the props, weight operated means for moving the drill on the platform when the drill is supported in either position, said weight operated means embodying guides at opposite ends of one of the props, and flexible members adapted for connection with the drill and for selective cooperation with different ones of the guides. I

In testimony whereof I aflix my signature.

JOHN NAGY. 

